| /* |
| ****************************************************************************** |
| * |
| * Copyright (C) 1998-2001, International Business Machines |
| * Corporation and others. All Rights Reserved. |
| * |
| ****************************************************************************** |
| * |
| * ucnv.c: |
| * Implements APIs for the ICU's codeset conversion library; |
| * mostly calls through internal functions; |
| * created by Bertrand A. Damiba |
| * |
| * Modification History: |
| * |
| * Date Name Description |
| * 04/04/99 helena Fixed internal header inclusion. |
| * 05/09/00 helena Added implementation to handle fallback mappings. |
| * 06/20/2000 helena OS/400 port changes; mostly typecast. |
| */ |
| |
| #include "unicode/utypes.h" |
| #include "unicode/ustring.h" |
| #include "unicode/uloc.h" |
| #include "unicode/ures.h" |
| #include "unicode/ucnv.h" |
| #include "unicode/ucnv_err.h" |
| #include "cmemory.h" |
| #include "cstring.h" |
| #include "umutex.h" |
| #include "uhash.h" |
| #include "ustr_imp.h" |
| #include "ucnv_imp.h" |
| #include "ucnv_io.h" |
| #include "ucnv_cnv.h" |
| #include "ucnv_bld.h" |
| |
| extern UHashtable *SHARED_DATA_HASHTABLE; |
| extern UConverter *createConverter (const char *converterName, UErrorCode * err); |
| extern void copyPlatformString(char *platformString, UConverterPlatform pltfrm); |
| extern UBool deleteSharedConverterData(UConverterSharedData * deadSharedData); |
| |
| #if 0 |
| /* debugging for converters */ |
| # include <stdio.h> |
| void UCNV_DEBUG_LOG(char *what, char *who, void *p, int l) |
| { |
| static FILE *f = NULL; |
| if(f==NULL) |
| { |
| f = fopen("c:\\UCNV_DEBUG_LOG.txt", "w"); |
| } |
| fprintf(f, "%-20s %-10s %p@%d\n", |
| who,what,p,l); |
| fflush(f); |
| } |
| # define UCNV_DEBUG_LOG(x,y,z) UCNV_DEBUG_LOG(x,y,z,__LINE__) |
| #else |
| # define UCNV_DEBUG_LOG(x,y,z) |
| #endif |
| |
| /* size of intermediate and preflighting buffers in ucnv_convert() */ |
| #define CHUNK_SIZE 5*1024 |
| |
| typedef struct UAmbiguousConverter { |
| const char *name; |
| const UChar variant5c; |
| } UAmbiguousConverter; |
| |
| static const UAmbiguousConverter ambiguousConverters[]={ |
| { "ibm-942_P120-2000", 0xa5 }, |
| { "ibm-943_P130-2000", 0xa5 }, |
| { "ibm-33722", 0xa5 }, |
| { "ibm-949_P110-2000", 0x20a9 }, |
| { "ibm-1363_P110-2000", 0x20a9 }, |
| { "ISO_2022,locale=ko,version=0", 0x20a9 } |
| }; |
| |
| const char* ucnv_getDefaultName () |
| { |
| return ucnv_io_getDefaultConverterName(); |
| } |
| |
| void ucnv_setDefaultName (const char *converterName) |
| { |
| ucnv_io_setDefaultConverterName(converterName); |
| } |
| /*Calls through createConverter */ |
| UConverter* ucnv_open (const char *name, |
| UErrorCode * err) |
| { |
| if (err == NULL || U_FAILURE (*err)) { |
| return NULL; |
| } |
| |
| return ucnv_createConverter (name, err); |
| } |
| |
| /*Extracts the UChar* to a char* and calls through createConverter */ |
| UConverter* ucnv_openU (const UChar * name, |
| UErrorCode * err) |
| { |
| char asciiName[UCNV_MAX_CONVERTER_NAME_LENGTH]; |
| |
| if (U_FAILURE (*err)) |
| return NULL; |
| if (name == NULL) |
| return ucnv_open (NULL, err); |
| if (u_strlen (name) > UCNV_MAX_CONVERTER_NAME_LENGTH) |
| { |
| *err = U_ILLEGAL_ARGUMENT_ERROR; |
| return NULL; |
| } |
| return ucnv_open (u_austrcpy (asciiName, name), err); |
| } |
| |
| /*Assumes a $platform-#codepage.$CONVERTER_FILE_EXTENSION scheme and calls |
| *through createConverter*/ |
| UConverter* ucnv_openCCSID (int32_t codepage, |
| UConverterPlatform platform, |
| UErrorCode * err) |
| { |
| char myName[UCNV_MAX_CONVERTER_NAME_LENGTH]; |
| int32_t myNameLen; |
| |
| if (U_FAILURE (*err)) |
| return NULL; |
| |
| ucnv_copyPlatformString (myName, platform); |
| myNameLen = uprv_strlen(myName); |
| myName[myNameLen++] = '-'; |
| myName[myNameLen] = 0; |
| T_CString_integerToString (myName + myNameLen, codepage, 10); |
| |
| return ucnv_createConverter (myName, err); |
| } |
| |
| /* Creating a temporary stack-based object that can be used in one thread, |
| and created from a converter that is shared across threads. |
| */ |
| |
| UConverter *ucnv_safeClone(const UConverter* cnv, void *stackBuffer, int32_t *pBufferSize, UErrorCode *status) |
| { |
| UConverter * localConverter; |
| int32_t bufferSizeNeeded; |
| char *stackBufferChars = (char *)stackBuffer; |
| |
| if (status == NULL || U_FAILURE(*status)){ |
| return 0; |
| } |
| if (!pBufferSize || !cnv){ |
| *status = U_ILLEGAL_ARGUMENT_ERROR; |
| return 0; |
| } |
| /* Pointers on 64-bit platforms need to be aligned |
| * on a 64-bit boundry in memory. |
| */ |
| if (U_ALIGNMENT_OFFSET(stackBuffer) != 0) { |
| int32_t offsetUp = (int32_t)U_ALIGNMENT_OFFSET_UP(stackBufferChars); |
| *pBufferSize -= offsetUp; |
| stackBufferChars += offsetUp; |
| } |
| stackBuffer = (void *)stackBufferChars; |
| |
| if (cnv->sharedData->impl->safeClone != NULL) { |
| /* call the custom safeClone function for sizing */ |
| bufferSizeNeeded = 0; |
| cnv->sharedData->impl->safeClone(cnv, stackBuffer, &bufferSizeNeeded, status); |
| } |
| else |
| { |
| bufferSizeNeeded = sizeof(UConverter); |
| } |
| |
| if (*pBufferSize <= 0){ /* 'preflighting' request - set needed size into *pBufferSize */ |
| *pBufferSize = bufferSizeNeeded; |
| return 0; |
| } |
| |
| if (*pBufferSize < bufferSizeNeeded || stackBuffer == NULL) |
| { |
| /* allocate one here...*/ |
| localConverter = ucnv_createConverter (ucnv_getName (cnv, status), status); |
| if (U_SUCCESS(*status)) |
| { |
| *status = U_SAFECLONE_ALLOCATED_ERROR; |
| } |
| } else { |
| if (cnv->sharedData->impl->safeClone != NULL) { |
| /* call the custom safeClone function */ |
| localConverter = cnv->sharedData->impl->safeClone(cnv, stackBuffer, pBufferSize, status); |
| } |
| else |
| { |
| localConverter = (UConverter *)stackBuffer; |
| uprv_memcpy(localConverter, cnv, sizeof(UConverter)); |
| localConverter->isCopyLocal = TRUE; |
| } |
| } |
| return localConverter; |
| } |
| |
| |
| |
| /*Decreases the reference counter in the shared immutable section of the object |
| *and frees the mutable part*/ |
| |
| void ucnv_close (UConverter * converter) |
| { |
| /* first, notify the callback functions that the converter is closed */ |
| UConverterToUnicodeArgs toUArgs = { |
| sizeof(UConverterToUnicodeArgs), |
| TRUE, |
| NULL, |
| NULL, |
| NULL, |
| NULL, |
| NULL, |
| NULL |
| }; |
| UConverterFromUnicodeArgs fromUArgs = { |
| sizeof(UConverterFromUnicodeArgs), |
| TRUE, |
| NULL, |
| NULL, |
| NULL, |
| NULL, |
| NULL, |
| NULL |
| }; |
| UErrorCode errorCode; |
| |
| if (converter == NULL) |
| { |
| return; |
| } |
| |
| toUArgs.converter = fromUArgs.converter = converter; |
| errorCode = U_ZERO_ERROR; |
| converter->fromCharErrorBehaviour(converter->toUContext, &toUArgs, NULL, 0, UCNV_CLOSE, &errorCode); |
| errorCode = U_ZERO_ERROR; |
| converter->fromUCharErrorBehaviour(converter->fromUContext, &fromUArgs, NULL, 0, 0, UCNV_CLOSE, &errorCode); |
| |
| if (converter->sharedData->impl->close != NULL) { |
| converter->sharedData->impl->close(converter); |
| } |
| if(!converter->isCopyLocal){ |
| if (converter->sharedData->referenceCounter != ~0) { |
| umtx_lock (NULL); |
| if (converter->sharedData->referenceCounter != 0) { |
| converter->sharedData->referenceCounter--; |
| } |
| umtx_unlock (NULL); |
| } |
| uprv_free (converter); |
| } |
| return; |
| } |
| |
| /*returns a single Name from the list, will return NULL if out of bounds |
| */ |
| const char* ucnv_getAvailableName (int32_t n) |
| { |
| if (0 <= n && n <= 0xffff) { |
| UErrorCode err = U_ZERO_ERROR; |
| const char *name = ucnv_io_getAvailableConverter((uint16_t)n, &err); |
| if (U_SUCCESS(err)) { |
| return name; |
| } |
| } |
| return NULL; |
| } |
| |
| int32_t ucnv_countAvailable () |
| { |
| UErrorCode err = U_ZERO_ERROR; |
| return ucnv_io_countAvailableConverters(&err); |
| } |
| |
| U_CAPI uint16_t |
| ucnv_countAliases(const char *alias, UErrorCode *pErrorCode) |
| { |
| const char *p; |
| return ucnv_io_getAliases(alias, &p, pErrorCode); |
| } |
| |
| |
| U_CAPI const char * |
| ucnv_getAlias(const char *alias, uint16_t n, UErrorCode *pErrorCode) |
| { |
| return ucnv_io_getAlias(alias, n, pErrorCode); |
| } |
| |
| U_CAPI void |
| ucnv_getAliases(const char *alias, const char **aliases, UErrorCode *pErrorCode) |
| { |
| const char *p; |
| uint16_t count=ucnv_io_getAliases(alias, &p, pErrorCode); |
| while(count>0) { |
| *aliases++=p; |
| /* skip a name, first the canonical converter name */ |
| p+=uprv_strlen(p)+1; |
| --count; |
| } |
| } |
| |
| U_CAPI uint16_t |
| ucnv_countStandards(void) |
| { |
| UErrorCode err = U_ZERO_ERROR; |
| return ucnv_io_countStandards(&err); |
| } |
| |
| void ucnv_getSubstChars (const UConverter * converter, |
| char *mySubChar, |
| int8_t * len, |
| UErrorCode * err) |
| { |
| if (U_FAILURE (*err)) |
| return; |
| |
| if (*len < converter->subCharLen) /*not enough space in subChars */ |
| { |
| *err = U_INDEX_OUTOFBOUNDS_ERROR; |
| return; |
| } |
| |
| uprv_memcpy (mySubChar, converter->subChar, converter->subCharLen); /*fills in the subchars */ |
| *len = converter->subCharLen; /*store # of bytes copied to buffer */ |
| uprv_memcpy (mySubChar, converter->subChar, converter->subCharLen); /*fills in the subchars */ |
| *len = converter->subCharLen; /*store # of bytes copied to buffer */ |
| } |
| |
| void ucnv_setSubstChars (UConverter * converter, |
| const char *mySubChar, |
| int8_t len, |
| UErrorCode * err) |
| { |
| if (U_FAILURE (*err)) |
| return; |
| |
| /*Makes sure that the subChar is within the codepages char length boundaries */ |
| if ((len > converter->sharedData->staticData->maxBytesPerChar) |
| || (len < converter->sharedData->staticData->minBytesPerChar)) |
| { |
| *err = U_ILLEGAL_ARGUMENT_ERROR; |
| return; |
| } |
| |
| uprv_memcpy (converter->subChar, mySubChar, len); /*copies the subchars */ |
| converter->subCharLen = len; /*sets the new len */ |
| |
| /* |
| * There is currently (2001Feb) no separate API to set/get subChar1. |
| * In order to always have subChar written after it is explicitly set, |
| * we set subChar1 to 0. |
| */ |
| converter->subChar1 = 0; |
| |
| return; |
| } |
| |
| int32_t |
| ucnv_getDisplayName(const UConverter *cnv, |
| const char *displayLocale, |
| UChar *displayName, int32_t displayNameCapacity, |
| UErrorCode *pErrorCode) { |
| UResourceBundle *rb; |
| const UChar *name; |
| int32_t length; |
| |
| /* check arguments */ |
| if(pErrorCode==NULL || U_FAILURE(*pErrorCode)) { |
| return 0; |
| } |
| |
| if(cnv==NULL || displayNameCapacity<0 || (displayNameCapacity>0 && displayName==NULL)) { |
| *pErrorCode=U_ILLEGAL_ARGUMENT_ERROR; |
| return 0; |
| } |
| |
| /* open the resource bundle and get the display name string */ |
| rb=ures_open(NULL, displayLocale, pErrorCode); |
| if(U_FAILURE(*pErrorCode)) { |
| return 0; |
| } |
| |
| /* use the internal name as the key */ |
| name=ures_getStringByKey(rb, cnv->sharedData->staticData->name, &length, pErrorCode); |
| ures_close(rb); |
| |
| if(U_SUCCESS(*pErrorCode)) { |
| /* copy the string */ |
| u_memcpy(displayName, name, uprv_min(length, displayNameCapacity)*U_SIZEOF_UCHAR); |
| } else { |
| /* convert the internal name into a Unicode string */ |
| *pErrorCode=U_ZERO_ERROR; |
| length=uprv_strlen(cnv->sharedData->staticData->name); |
| u_charsToUChars(cnv->sharedData->staticData->name, displayName, uprv_min(length, displayNameCapacity)); |
| } |
| return u_terminateUChars(displayName, displayNameCapacity, length, pErrorCode); |
| } |
| |
| /*resets the internal states of a converter |
| *goal : have the same behaviour than a freshly created converter |
| */ |
| static void _reset(UConverter *converter, UConverterResetChoice choice) { |
| /* first, notify the callback functions that the converter is reset */ |
| UConverterToUnicodeArgs toUArgs = { |
| sizeof(UConverterToUnicodeArgs), |
| TRUE, |
| NULL, |
| NULL, |
| NULL, |
| NULL, |
| NULL, |
| NULL |
| }; |
| UConverterFromUnicodeArgs fromUArgs = { |
| sizeof(UConverterFromUnicodeArgs), |
| TRUE, |
| NULL, |
| NULL, |
| NULL, |
| NULL, |
| NULL, |
| NULL |
| }; |
| UErrorCode errorCode; |
| |
| if(converter == NULL) { |
| return; |
| } |
| |
| toUArgs.converter = fromUArgs.converter = converter; |
| if(choice<=UCNV_RESET_TO_UNICODE) { |
| errorCode = U_ZERO_ERROR; |
| converter->fromCharErrorBehaviour(converter->toUContext, &toUArgs, NULL, 0, UCNV_RESET, &errorCode); |
| } |
| if(choice!=UCNV_RESET_TO_UNICODE) { |
| errorCode = U_ZERO_ERROR; |
| converter->fromUCharErrorBehaviour(converter->fromUContext, &fromUArgs, NULL, 0, 0, UCNV_RESET, &errorCode); |
| } |
| |
| /* now reset the converter itself */ |
| if(choice<=UCNV_RESET_TO_UNICODE) { |
| converter->toUnicodeStatus = converter->sharedData->toUnicodeStatus; |
| converter->UCharErrorBufferLength = 0; |
| } |
| if(choice!=UCNV_RESET_TO_UNICODE) { |
| converter->fromUnicodeStatus = 0; |
| converter->charErrorBufferLength = 0; |
| } |
| |
| if (converter->sharedData->impl->reset != NULL) { |
| /* call the custom reset function */ |
| converter->sharedData->impl->reset(converter, choice); |
| } else if(choice<=UCNV_RESET_TO_UNICODE) { |
| converter->mode = UCNV_SI; |
| } |
| } |
| |
| void ucnv_reset(UConverter *converter) |
| { |
| _reset(converter, UCNV_RESET_BOTH); |
| } |
| |
| void ucnv_resetToUnicode(UConverter *converter) |
| { |
| _reset(converter, UCNV_RESET_TO_UNICODE); |
| } |
| |
| void ucnv_resetFromUnicode(UConverter *converter) |
| { |
| _reset(converter, UCNV_RESET_FROM_UNICODE); |
| } |
| |
| int8_t ucnv_getMaxCharSize (const UConverter * converter) |
| { |
| return converter->sharedData->staticData->maxBytesPerChar; |
| } |
| |
| |
| int8_t ucnv_getMinCharSize (const UConverter * converter) |
| { |
| return converter->sharedData->staticData->minBytesPerChar; |
| } |
| |
| const char* ucnv_getName (const UConverter * converter, UErrorCode * err) |
| |
| { |
| if (U_FAILURE (*err)) |
| return NULL; |
| if(converter->sharedData->impl->getName){ |
| const char* temp= converter->sharedData->impl->getName(converter); |
| if(temp) |
| return temp; |
| } |
| return converter->sharedData->staticData->name; |
| } |
| |
| int32_t ucnv_getCCSID (const UConverter * converter, |
| UErrorCode * err) |
| { |
| if (U_FAILURE (*err)) |
| return -1; |
| |
| return converter->sharedData->staticData->codepage; |
| } |
| |
| |
| UConverterPlatform ucnv_getPlatform (const UConverter * converter, |
| UErrorCode * err) |
| { |
| if (U_FAILURE (*err)) |
| return UCNV_UNKNOWN; |
| |
| return (UConverterPlatform)converter->sharedData->staticData->platform; |
| } |
| |
| U_CAPI void U_EXPORT2 |
| ucnv_getToUCallBack (const UConverter * converter, |
| UConverterToUCallback *action, |
| const void **context) |
| { |
| *action = converter->fromCharErrorBehaviour; |
| *context = converter->toUContext; |
| } |
| |
| U_CAPI void U_EXPORT2 |
| ucnv_getFromUCallBack (const UConverter * converter, |
| UConverterFromUCallback *action, |
| const void **context) |
| { |
| *action = converter->fromUCharErrorBehaviour; |
| *context = converter->fromUContext; |
| } |
| |
| void ucnv_setToUCallBack (UConverter * converter, |
| UConverterToUCallback newAction, |
| const void* newContext, |
| UConverterToUCallback *oldAction, |
| const void** oldContext, |
| UErrorCode * err) |
| { |
| if (U_FAILURE (*err)) |
| return; |
| *oldAction = converter->fromCharErrorBehaviour; |
| converter->fromCharErrorBehaviour = newAction; |
| *oldContext = converter->toUContext; |
| converter->toUContext = newContext; |
| } |
| |
| void ucnv_setFromUCallBack (UConverter * converter, |
| UConverterFromUCallback newAction, |
| const void* newContext, |
| UConverterFromUCallback *oldAction, |
| const void** oldContext, |
| UErrorCode * err) |
| { |
| if (U_FAILURE (*err)) |
| return; |
| *oldAction = converter->fromUCharErrorBehaviour; |
| converter->fromUCharErrorBehaviour = newAction; |
| *oldContext = converter->fromUContext; |
| converter->fromUContext = newContext; |
| } |
| |
| void ucnv_fromUnicode (UConverter * _this, |
| char **target, |
| const char *targetLimit, |
| const UChar ** source, |
| const UChar * sourceLimit, |
| int32_t* offsets, |
| UBool flush, |
| UErrorCode * err) |
| { |
| UConverterFromUnicodeArgs args; |
| const char *t; |
| |
| /* |
| * Check parameters in for all conversions |
| */ |
| if (err == NULL || U_FAILURE (*err)) { |
| return; |
| } |
| |
| if (_this == NULL || target == NULL || source == NULL) { |
| *err = U_ILLEGAL_ARGUMENT_ERROR; |
| return; |
| } |
| |
| t = *target; |
| if (targetLimit < t || sourceLimit < *source) |
| { |
| *err = U_ILLEGAL_ARGUMENT_ERROR; |
| return; |
| } |
| |
| /* |
| * Make sure that the target buffer size does not exceed the number range for int32_t |
| * because some functions use the size rather than comparing pointers. |
| * size_t is guaranteed to be unsigned. |
| */ |
| if((size_t)(targetLimit - t) > (size_t)0x7fffffff && targetLimit > t) |
| { |
| targetLimit = t + 0x7fffffff; |
| } |
| |
| /* |
| * Deal with stored carry over data. This is done in the common location |
| * to avoid doing it for each conversion. |
| */ |
| if (_this->charErrorBufferLength > 0) |
| { |
| int32_t myTargetIndex = 0; |
| |
| ucnv_flushInternalCharBuffer (_this, |
| (char *)t, |
| &myTargetIndex, |
| targetLimit - *target, |
| offsets?&offsets:NULL, |
| err); |
| *target += myTargetIndex; |
| if (U_FAILURE (*err)) |
| return; |
| } |
| |
| args.converter = _this; |
| args.flush = flush; |
| args.offsets = offsets; |
| args.source = *source; |
| args.sourceLimit = sourceLimit; |
| args.target = *target; |
| args.targetLimit = targetLimit; |
| args.size = sizeof(args); |
| if (offsets) |
| { |
| if (_this->sharedData->impl->fromUnicodeWithOffsets != NULL) |
| { |
| _this->sharedData->impl->fromUnicodeWithOffsets(&args, err); |
| *source = args.source; |
| *target = args.target; |
| return; |
| } |
| else { |
| /* there is no implementation that sets offsets, set them all to -1 */ |
| int32_t i, targetSize = targetLimit - *target; |
| |
| for (i=0; i<targetSize; i++) { |
| offsets[i] = -1; |
| } |
| } |
| } |
| |
| /*calls the specific conversion routines */ |
| _this->sharedData->impl->fromUnicode(&args, err); |
| *source = args.source; |
| *target = args.target; |
| } |
| |
| |
| |
| void ucnv_toUnicode (UConverter * _this, |
| UChar ** target, |
| const UChar * targetLimit, |
| const char **source, |
| const char *sourceLimit, |
| int32_t* offsets, |
| UBool flush, |
| UErrorCode * err) |
| { |
| UConverterToUnicodeArgs args; |
| const UChar *t; |
| |
| /* |
| * Check parameters in for all conversions |
| */ |
| if (err == NULL || U_FAILURE (*err)) { |
| return; |
| } |
| |
| if (_this == NULL || target == NULL || source == NULL) { |
| *err = U_ILLEGAL_ARGUMENT_ERROR; |
| return; |
| } |
| |
| t = *target; |
| if (targetLimit < t || sourceLimit < *source) { |
| *err = U_ILLEGAL_ARGUMENT_ERROR; |
| return; |
| } |
| |
| /* |
| * Make sure that the target buffer size does not exceed the number range for int32_t |
| * because some functions use the size rather than comparing pointers. |
| * size_t is guaranteed to be unsigned. |
| */ |
| if((size_t)(targetLimit - t) > (size_t)0x3fffffff && targetLimit > t) { |
| targetLimit = t + 0x3fffffff; |
| } |
| |
| /* |
| * Deal with stored carry over data. This is done in the common location |
| * to avoid doing it for each conversion. |
| */ |
| if (_this->UCharErrorBufferLength > 0) |
| { |
| int32_t myTargetIndex = 0; |
| |
| ucnv_flushInternalUnicodeBuffer (_this, |
| (UChar *)t, |
| &myTargetIndex, |
| targetLimit - *target, |
| offsets?&offsets:NULL, |
| err); |
| *target += myTargetIndex; |
| if (U_FAILURE (*err)) |
| return; |
| } |
| |
| args.converter = _this; |
| args.flush = flush; |
| args.offsets = offsets; |
| args.source = (char *) *source; |
| args.sourceLimit = sourceLimit; |
| args.target = *target; |
| args.targetLimit = targetLimit; |
| args.size = sizeof(args); |
| if (offsets) { |
| if (_this->sharedData->impl->toUnicodeWithOffsets != NULL) { |
| _this->sharedData->impl->toUnicodeWithOffsets(&args, err); |
| *source = args.source; |
| *target = args.target; |
| return; |
| } else { |
| /* there is no implementation that sets offsets, set them all to -1 */ |
| int32_t i, targetSize = targetLimit - *target; |
| |
| for (i=0; i<targetSize; i++) { |
| offsets[i] = -1; |
| } |
| } |
| } |
| |
| /*calls the specific conversion routines */ |
| _this->sharedData->impl->toUnicode(&args, err); |
| |
| *source = args.source; |
| *target = args.target; |
| return; |
| } |
| |
| int32_t |
| ucnv_fromUChars(UConverter *cnv, |
| char *dest, int32_t destCapacity, |
| const UChar *src, int32_t srcLength, |
| UErrorCode *pErrorCode) { |
| const UChar *srcLimit; |
| char *originalDest, *destLimit; |
| int32_t destLength; |
| |
| /* check arguments */ |
| if(pErrorCode==NULL || U_FAILURE(*pErrorCode)) { |
| return 0; |
| } |
| |
| if( cnv==NULL || |
| destCapacity<0 || (destCapacity>0 && dest==NULL) || |
| srcLength<-1 || (srcLength!=0 && src==NULL) |
| ) { |
| *pErrorCode=U_ILLEGAL_ARGUMENT_ERROR; |
| return 0; |
| } |
| |
| /* initialize */ |
| ucnv_resetFromUnicode(cnv); |
| originalDest=dest; |
| if(srcLength==-1) { |
| srcLength=u_strlen(src); |
| } |
| if(srcLength>0) { |
| srcLimit=src+srcLength; |
| destLimit=dest+destCapacity; |
| |
| /* pin the destination limit to U_MAX_PTR; NULL check is for OS/400 */ |
| if(destLimit<dest || (destLimit==NULL && dest!=NULL)) { |
| destLimit=(char *)U_MAX_PTR(dest); |
| } |
| |
| /* perform the conversion */ |
| ucnv_fromUnicode(cnv, &dest, destLimit, &src, srcLimit, 0, TRUE, pErrorCode); |
| destLength=(int32_t)(dest-originalDest); |
| |
| /* if an overflow occurs, then get the preflighting length */ |
| if(*pErrorCode==U_BUFFER_OVERFLOW_ERROR) { |
| char buffer[1024]; |
| |
| destLimit=buffer+sizeof(buffer); |
| do { |
| dest=buffer; |
| *pErrorCode=U_ZERO_ERROR; |
| ucnv_fromUnicode(cnv, &dest, destLimit, &src, srcLimit, 0, TRUE, pErrorCode); |
| destLength+=(int32_t)(dest-buffer); |
| } while(*pErrorCode==U_BUFFER_OVERFLOW_ERROR); |
| } |
| } else { |
| destLength=0; |
| } |
| |
| return u_terminateChars(originalDest, destCapacity, destLength, pErrorCode); |
| } |
| |
| int32_t |
| ucnv_toUChars(UConverter *cnv, |
| UChar *dest, int32_t destCapacity, |
| const char *src, int32_t srcLength, |
| UErrorCode *pErrorCode) { |
| const char *srcLimit; |
| UChar *originalDest, *destLimit; |
| int32_t destLength; |
| |
| /* check arguments */ |
| if(pErrorCode==NULL || U_FAILURE(*pErrorCode)) { |
| return 0; |
| } |
| |
| if( cnv==NULL || |
| destCapacity<0 || (destCapacity>0 && dest==NULL) || |
| srcLength<-1 || (srcLength!=0 && src==NULL)) |
| { |
| *pErrorCode=U_ILLEGAL_ARGUMENT_ERROR; |
| return 0; |
| } |
| |
| /* initialize */ |
| ucnv_resetToUnicode(cnv); |
| originalDest=dest; |
| if(srcLength==-1) { |
| srcLength=uprv_strlen(src); |
| } |
| if(srcLength>0) { |
| srcLimit=src+srcLength; |
| destLimit=dest+destCapacity; |
| |
| /* pin the destination limit to U_MAX_PTR; NULL check is for OS/400 */ |
| if(destLimit<dest || (destLimit==NULL && dest!=NULL)) { |
| destLimit=(UChar *)U_MAX_PTR(dest); |
| } |
| |
| /* perform the conversion */ |
| ucnv_toUnicode(cnv, &dest, destLimit, &src, srcLimit, 0, TRUE, pErrorCode); |
| destLength=(int32_t)(dest-originalDest); |
| |
| /* if an overflow occurs, then get the preflighting length */ |
| if(*pErrorCode==U_BUFFER_OVERFLOW_ERROR) |
| { |
| UChar buffer[1024]; |
| |
| destLimit=buffer+sizeof(buffer)/U_SIZEOF_UCHAR; |
| do { |
| dest=buffer; |
| *pErrorCode=U_ZERO_ERROR; |
| ucnv_toUnicode(cnv, &dest, destLimit, &src, srcLimit, 0, TRUE, pErrorCode); |
| destLength+=(int32_t)(dest-buffer); |
| } |
| while(*pErrorCode==U_BUFFER_OVERFLOW_ERROR); |
| } |
| } else { |
| destLength=0; |
| } |
| |
| return u_terminateUChars(originalDest, destCapacity, destLength, pErrorCode); |
| } |
| |
| UChar32 ucnv_getNextUChar(UConverter * converter, |
| const char **source, |
| const char *sourceLimit, |
| UErrorCode * err) |
| { |
| UConverterToUnicodeArgs args; |
| UChar32 ch; |
| |
| if(err == NULL || U_FAILURE(*err)) { |
| return 0xffff; |
| } |
| |
| if(converter == NULL || source == NULL || sourceLimit < *source) { |
| *err = U_ILLEGAL_ARGUMENT_ERROR; |
| return 0xffff; |
| } |
| |
| /* In case internal data had been stored |
| * we return the first UChar32 in the internal buffer, |
| * and update the internal state accordingly |
| */ |
| if (converter->UCharErrorBufferLength > 0) |
| { |
| UTextOffset i = 0; |
| UChar32 myUChar; |
| UTF_NEXT_CHAR(converter->UCharErrorBuffer, i, sizeof(converter->UCharErrorBuffer), myUChar); |
| /*In this memmove we update the internal buffer by |
| *popping the first character. |
| *Note that in the call itself we decrement |
| *UCharErrorBufferLength |
| */ |
| uprv_memmove (converter->UCharErrorBuffer, |
| converter->UCharErrorBuffer + i, |
| (converter->UCharErrorBufferLength - i) * sizeof (UChar)); |
| converter->UCharErrorBufferLength -= (int8_t)i; |
| return myUChar; |
| } |
| /*calls the specific conversion routines */ |
| /*as dictated in a code review, avoids a switch statement */ |
| args.converter = converter; |
| args.flush = TRUE; |
| args.offsets = NULL; |
| args.source = *source; |
| args.sourceLimit = sourceLimit; |
| args.target = NULL; |
| args.targetLimit = NULL; |
| args.size = sizeof(args); |
| if (converter->sharedData->impl->getNextUChar != NULL) |
| { |
| ch = converter->sharedData->impl->getNextUChar(&args, err); |
| } else { |
| /* default implementation */ |
| ch = ucnv_getNextUCharFromToUImpl(&args, converter->sharedData->impl->toUnicode, FALSE, err); |
| } |
| *source = args.source; |
| return ch; |
| } |
| |
| int32_t |
| ucnv_convert(const char *toConverterName, const char *fromConverterName, |
| char *target, int32_t targetSize, |
| const char *source, int32_t sourceSize, |
| UErrorCode *pErrorCode) { |
| UChar pivotBuffer[CHUNK_SIZE]; |
| UChar *pivot, *pivot2; |
| |
| UConverter *inConverter, *outConverter; |
| char *myTarget; |
| const char *sourceLimit; |
| const char *targetLimit; |
| int32_t targetCapacity=0; |
| |
| if(pErrorCode==NULL || U_FAILURE(*pErrorCode)) { |
| return 0; |
| } |
| |
| if(sourceSize<0 || targetSize<0 || source==NULL |
| || (targetSize>0 && target==NULL)) |
| { |
| *pErrorCode=U_ILLEGAL_ARGUMENT_ERROR; |
| return 0; |
| } |
| |
| /* if there is no input data, we're done */ |
| if(sourceSize==0) { |
| return 0; |
| } |
| |
| /* create the converters */ |
| inConverter=ucnv_open(fromConverterName, pErrorCode); |
| if(U_FAILURE(*pErrorCode)) { |
| return 0; |
| } |
| |
| outConverter=ucnv_open(toConverterName, pErrorCode); |
| if(U_FAILURE(*pErrorCode)) { |
| ucnv_close(inConverter); |
| return 0; |
| } |
| |
| /* set up the other variables */ |
| sourceLimit=source+sourceSize; |
| pivot=pivot2=pivotBuffer; |
| myTarget=target; |
| targetCapacity=0; |
| |
| if(targetSize>0) { |
| /* perform real conversion */ |
| |
| /* |
| * loops until the input buffer is completely consumed |
| * or an error is encountered; |
| * first we convert from inConverter codepage to Unicode |
| * then from Unicode to outConverter codepage |
| */ |
| targetLimit=target+targetSize; |
| do { |
| pivot=pivotBuffer; |
| ucnv_toUnicode(inConverter, |
| &pivot, pivotBuffer+CHUNK_SIZE, |
| &source, sourceLimit, |
| NULL, |
| TRUE, |
| pErrorCode); |
| |
| /* U_BUFFER_OVERFLOW_ERROR only means that the pivot buffer is full */ |
| if(U_SUCCESS(*pErrorCode) || *pErrorCode==U_BUFFER_OVERFLOW_ERROR) { |
| *pErrorCode=U_ZERO_ERROR; |
| pivot2=pivotBuffer; |
| ucnv_fromUnicode(outConverter, |
| &myTarget, targetLimit, |
| (const UChar **)&pivot2, pivot, |
| NULL, |
| (UBool)(source==sourceLimit), |
| pErrorCode); |
| /* |
| * If this overflows the real target, then we must stop |
| * converting and preflight with the loop below. |
| */ |
| } |
| } while(U_SUCCESS(*pErrorCode) && source!=sourceLimit); |
| |
| targetCapacity=myTarget-target; |
| } |
| |
| /* |
| * If the output buffer is exhausted (or we are only "preflighting"), we need to stop writing |
| * to it but continue the conversion in order to store in targetSize |
| * the number of bytes that was required. |
| */ |
| if(*pErrorCode==U_BUFFER_OVERFLOW_ERROR || targetSize==0) |
| { |
| char targetBuffer[CHUNK_SIZE]; |
| |
| targetLimit=targetBuffer+CHUNK_SIZE; |
| do { |
| /* since the pivot buffer may still contain some characters, start with emptying it */ |
| *pErrorCode=U_ZERO_ERROR; |
| while(pivot2!=pivot && U_SUCCESS(*pErrorCode)) { |
| myTarget=targetBuffer; |
| ucnv_fromUnicode(outConverter, |
| &myTarget, targetLimit, |
| (const UChar **)&pivot2, pivot, |
| NULL, |
| (UBool)(source==sourceLimit), |
| pErrorCode); |
| targetCapacity+=(myTarget-targetBuffer); |
| if(*pErrorCode==U_BUFFER_OVERFLOW_ERROR) { |
| *pErrorCode=U_ZERO_ERROR; |
| } |
| } |
| |
| if(U_FAILURE(*pErrorCode)) { |
| /* an error occurred: done */ |
| break; |
| } |
| |
| if(source==sourceLimit) { |
| /* |
| * source is consumed: |
| * done, and set the buffer overflow error as |
| * the result for the entire function |
| */ |
| *pErrorCode=U_BUFFER_OVERFLOW_ERROR; |
| break; |
| } |
| |
| /* now convert from the source into the pivot buffer again */ |
| pivot=pivot2=pivotBuffer; |
| ucnv_toUnicode(inConverter, |
| &pivot, pivotBuffer+CHUNK_SIZE, |
| &source, sourceLimit, |
| NULL, |
| TRUE, |
| pErrorCode); |
| } |
| while(U_SUCCESS(*pErrorCode) || *pErrorCode==U_BUFFER_OVERFLOW_ERROR); |
| } |
| |
| ucnv_close (inConverter); |
| ucnv_close (outConverter); |
| |
| return u_terminateChars(target, targetSize, targetCapacity, pErrorCode); |
| } |
| |
| UConverterType ucnv_getType(const UConverter* converter) |
| { |
| int8_t type = converter->sharedData->staticData->conversionType; |
| if(type == UCNV_MBCS) { |
| return _MBCSGetType(converter); |
| } |
| return (UConverterType)type; |
| } |
| |
| void ucnv_getStarters(const UConverter* converter, |
| UBool starters[256], |
| UErrorCode* err) |
| { |
| if (err == NULL || U_FAILURE(*err)) { |
| return; |
| } |
| |
| if(converter->sharedData->impl->getStarters != NULL) { |
| converter->sharedData->impl->getStarters(converter, starters, err); |
| } else { |
| *err = U_ILLEGAL_ARGUMENT_ERROR; |
| } |
| } |
| |
| static const UAmbiguousConverter *ucnv_getAmbiguous(const UConverter *cnv) |
| { |
| UErrorCode errorCode; |
| const char *name; |
| int32_t i; |
| |
| if(cnv==NULL) { |
| return NULL; |
| } |
| |
| errorCode=U_ZERO_ERROR; |
| name=ucnv_getName(cnv, &errorCode); |
| if(U_FAILURE(errorCode)) { |
| return NULL; |
| } |
| |
| for(i=0; i<(int32_t)(sizeof(ambiguousConverters)/sizeof(UAmbiguousConverter)); ++i) |
| { |
| if(0==uprv_strcmp(name, ambiguousConverters[i].name)) |
| { |
| return ambiguousConverters+i; |
| } |
| } |
| |
| return NULL; |
| } |
| |
| void ucnv_fixFileSeparator(const UConverter *cnv, |
| UChar* source, |
| int32_t sourceLength) { |
| const UAmbiguousConverter *a; |
| int32_t i; |
| UChar variant5c; |
| |
| if(cnv==NULL || source==NULL || sourceLength<=0 || (a=ucnv_getAmbiguous(cnv))==NULL) |
| { |
| return; |
| } |
| |
| variant5c=a->variant5c; |
| for(i=0; i<sourceLength; ++i) { |
| if(source[i]==variant5c) { |
| source[i]=0x5c; |
| } |
| } |
| } |
| |
| UBool ucnv_isAmbiguous(const UConverter *cnv) { |
| return (UBool)(ucnv_getAmbiguous(cnv)!=NULL); |
| } |
| |
| void ucnv_setFallback(UConverter *cnv, UBool usesFallback) |
| { |
| cnv->useFallback = usesFallback; |
| } |
| |
| UBool ucnv_usesFallback(const UConverter *cnv) |
| { |
| return cnv->useFallback; |
| } |
| |
| void |
| ucnv_getInvalidChars (const UConverter * converter, |
| char *errBytes, |
| int8_t * len, |
| UErrorCode * err) |
| { |
| if (err == NULL || U_FAILURE(*err)) |
| { |
| return; |
| } |
| if (len == NULL || errBytes == NULL || converter == NULL) |
| { |
| *err = U_ILLEGAL_ARGUMENT_ERROR; |
| return; |
| } |
| if (*len < converter->invalidCharLength) |
| { |
| *err = U_INDEX_OUTOFBOUNDS_ERROR; |
| return; |
| } |
| if ((*len = converter->invalidCharLength) > 0) |
| { |
| uprv_memcpy (errBytes, converter->invalidCharBuffer, *len); |
| } |
| } |
| |
| void |
| ucnv_getInvalidUChars (const UConverter * converter, |
| UChar *errChars, |
| int8_t * len, |
| UErrorCode * err) |
| { |
| if (err == NULL || U_FAILURE(*err)) |
| { |
| return; |
| } |
| if (len == NULL || errChars == NULL || converter == NULL) |
| { |
| *err = U_ILLEGAL_ARGUMENT_ERROR; |
| return; |
| } |
| if (*len < converter->invalidUCharLength) |
| { |
| *err = U_INDEX_OUTOFBOUNDS_ERROR; |
| return; |
| } |
| if ((*len = converter->invalidUCharLength) > 0) |
| { |
| uprv_memcpy (errChars, converter->invalidUCharBuffer, sizeof(UChar) * (*len)); |
| } |
| } |
| |
| /* |
| * Hey, Emacs, please set the following: |
| * |
| * Local Variables: |
| * indent-tabs-mode: nil |
| * End: |
| * |
| */ |
| |
